Global Precipitation Climatology Project (GPCP) Climate Data Record (CDR), Version 2.3 (Monthly)

The Global Precipitation Climatology Project (GPCP) consists of monthly satellite-gauge and associated precipitation error estimates and covers the period January 1979 to the present. The general approach is to combine the precipitation information available from each of several satellite and in situ sources into a final merged product, taking advantage of the strengths of each data type: passive Microwave estimates are based on SSMI/SSMIS data; infrared precipitation estimates are included, using GOES data and POES data; as well as other low earth orbit data and insitu observations. Data are provided on a 2.5 degree grid.

全球降水气候学计划（Global Precipitation Climatology Project, GPCP）包含逐月卫星-地面雨量计融合降水数据及配套的降水误差估计数据集，时间覆盖范围为1979年1月至今。其核心构建思路为整合多类卫星与原位观测（in situ）源的降水信息，生成最终融合产品，充分利用各类数据的固有优势：被动微波降水反演结果基于SSMI/SSMIS数据；红外降水估算采用GOES数据与POES数据，同时纳入其他低地球轨道卫星数据及原位观测资料。数据集采用2.5度经纬网格进行存储与分发。

搜集汇总

背景与挑战

背景概述

该数据集是全球降水气候学项目(GPCP)的月度气候数据记录(CDR)版本2.3，整合了1979年至今的卫星和地面降水观测数据，以2.5度网格提供全球降水分布，旨在为气候研究提供高质量的长期降水记录。